ClickHouse/docs/en/operations/system-tables/functions.md
2021-07-29 18:20:55 +03:00

1.6 KiB
Raw Blame History

system.functions

Contains information about normal and aggregate functions.

Columns:

  • name(String) The name of the function.
  • is_aggregate(UInt8) — Whether the function is aggregate.

Example

 SELECT * FROM system.functions LIMIT 10;
┌─name─────────────────────┬─is_aggregate─┬─case_insensitive─┬─alias_to─┐
│ sumburConsistentHash     │            0 │                0 │          │
│ yandexConsistentHash     │            0 │                0 │          │
│ demangle                 │            0 │                0 │          │
│ addressToLine            │            0 │                0 │          │
│ JSONExtractRaw           │            0 │                0 │          │
│ JSONExtractKeysAndValues │            0 │                0 │          │
│ JSONExtract              │            0 │                0 │          │
│ JSONExtractString        │            0 │                0 │          │
│ JSONExtractFloat         │            0 │                0 │          │
│ JSONExtractInt           │            0 │                0 │          │
└──────────────────────────┴──────────────┴──────────────────┴──────────┘

10 rows in set. Elapsed: 0.002 sec.

Original article